This is a hour and minute timer module with external connection of power and keys. The capacity is 99 hours 59 minutes. 16 mm digit height countdown timer module with 4 special option features for certain purpose, connection pads at both edges of PCB. Upon request, available 5 output poles with different waveform for special application. Many kinds of counting capacity are available. Under special request, it is possible to program the timer to a certain value of counting interval only to manipulate certain device constantly.